My gut feeling is that if your pistons were too tight, you would have found out in the first few minutes. Maybe they are on the snug side, but I think that your new shop may be a bit over the top on their criticism.

1951 GMC 1 Ton Flatbed -- It is finally on the road and what a great time I have driving it!
1951 1 Ton Completed

My Chevy Master 4 Door is on the Road!