I'd eliminate the accumulator from your list but otherwise agree. Not an issue when precharge is below min spec and for sure not cheap either. A 'flat' accumulator is a different animal.This should be the standard SMG service when you have problem. Clutch solenoid seals, Accumulator, Motor refurb or replacement, oil and relays. It's all in the same area and none of it will break the bank. After that is gets more expensive and more complicated.