I remember trying to figure out the exact length and he said you have adjustable rockers so there is room to play around. So, he ordered 7.250 I believe which are actually way too long judging by my bound up springs.
If he was able to attain any kind of lash the first time, it goes back to misadjustment to coil bind. The fact they were readjusted improperly the second time is what killed it. Sounds like he didn't take the time to roll the engine over and check lash on the heel of the cam. With the spring specs posted I don't know how it would have fired the first time unless the 1.6's were added later. Even on paper the room is not there.
I had an experience with a machine shop where I spec'd 901 springs when I got them back they had used whatever their best deal/house springs on it. It really pays to educate yourself to check over anybody else's work, and long term you'll be glad you did. on another occasion, in my younger days I experienced I experience the same lesson as you.
