Vintage Air System not too cool????!!!!

The adapter blocks could and would not seal. I must have bought 6 different pairs, made at least 4 of my own and still they would leak under vacuum. So why fight a losing battle, continue to shell out money, time making my own, it was fruitless, so I got the sanden and moved on. No complaints about the sanden, it bolted up to my brackets I made and I didn't have to use adapter blocks.