Thrust problems with two step in Stock

[GTX JOHN]

Thank you Gentleman for the replies.
I appreciate the help

We removed and welded up the crank in the
Superstock which is cast to get through the year

I have been told that the welded thrust will not hold up
very well. Not by the place that did it. However, told that
by my regular crankshaft guy (Castillo) who would not touch it.

I am debating running on a foot brake rather than using any
starting line two step at all.