Hmm you could use a piston stop and where you can see paint a new line. make a pointer or find a place to mark close to balancer! That mark or pointer will act as marks on timing cover 0 do. So coming up on piston stop on compression stroke (or if rockers are off it does not matter) put piston stop in and turn motor till it stops mark balancer at O mark you made or pointer. remove piston stop and turn a ways past TDC and re install piston stop. back up till it stops again. now mark balancer again. 1/2 in between those marks will be your new TDC mark on balance that coincides with pointer or 0 mark you made.
they are cheap
https://www.summitracing.com/int/search/...mp;N=4294887537If your real cheap knock everything off and out of a spark plug Tap it 5/16th then get a long 5/16th bolt and make threads go close to bolt head with 5/16th die and walla.
you can even spin a nut on to make a lock nut so it does not move!
