@Kodpkd, to be honest the only thing you will need the Mas. place for is the Leo. system or SD2/3. I know you already know this but to set the clutch parameters and tell the car it's new can only be done this way. Just have them bleed the entire system out as well. This will need to be done because you are splitting all the hydraulic lines in the bell housing. I don't believe you need to balance the clutch ON the car, which you would need them for, or again someone with the SD2/3; Leo system. Call your AAA service and have them tow it to the place when your done putting it together. I need to add this caveat though, please be sure that the place doesn't mind doing it before you tow it to them. I think Steve at the Aston Martin Dealer is more intrigued by me doing all this than anything, so he tolerates me......and I give him coffee money!
Obviously I will pay for the time to do it. But let's go into clutch balancing which is important......at least to me even if not to the Dealership that changed the single plate for the double under service awhile ago under the last owner.
Many other high performance car's clutches/flywheels aren't balanced together this way when the motor is ALREADY assembled. Some have the crank/pistons, etc with the flywheel and clutch dynamic balanced BEFORE they put the motor together. Mas. tried to get around this by doing it on the car after the motor was already built which proves the rotating assembly was already balanced to itself, and the plate/flywheel are neutral balanced to the assembly. My honest opinion is this, and I'm only going to tell you something I'm going to do, not tell you to do something I wouldn't do.
Take the flywheel and clutch pack to a machine shop that specializes in clutches or balancing and have them balanced together. They were already balanced individually BUT you have to be-careful not to get into tolerance stacking.
When individual things are balanced they are balanced with-in certain tolerances. However, when you put two to three things that's been balanced individually together those individual tolerances stack up. What initially wasn't out of tolerance can be out of tolerance by stacking for the car's application.
Now I know that there are shops that simply put the most out of balance marks 180 degree apart from each other, like in my car. To be honest I really believe you can get away with it and probably not notice a thing. They were individually balanced at the factory, that's why you have the drill marks on the PP, and you have marks on both the flywheel and clutch pack to tell you where the most out of balanced position is within the balanced tolerances.
However,........why not pay the $100 that a machine shop would charge you, if that, and have them balanced together as a unit like other high performance applications? I'm only doing it because it cost so very little to do it, and I'm dead certain it will definitely be better than not doing it, though I had no vibration in my car before. The crank and pistons are already balanced in the Mas. It's balanced separately, then, they balanced the flywheel and clutch pack to a motor already balanced. I would not be convinced that balancing these together off the car wouldn't be more than sufficient at any RPM range for our cars- if balanced together as a unit at all.
To answer your question, if you have a decent mechanic that's knowledgeable, and can follow torque specs I would say your golden. I will post photos when I put my car back together as well,....... show him this post off the forum, He can print the photos out if he needs to because some of the service manual wasn't the greatest with explaining things.
When I first bought the Mas. I thought there's no way in >>>>>>I'm taking that apart. Now I'm like it was easier to drop the gear box out of this car than it was to drop a transmission and transfer case out of a truck. It was all hand built to come apart as a unit, the gear box, wiring harnesses, the torque tube, and bell housing.......go for it.