Cal trac /mono leaf results

Bajavan; i have a 69 dart with the exact same problem as you word for word.The old super stocks with a snubber worked great,but i just thought an upgrade to cal-tracs and slit mono leafs would be better.A fellow drag racer at the track suggested to put an adjustable snubber back on to see if that would help. I my just do that.
It kind of defeats the purpose of the cal-tracs but if it will work i would be more than willing to do it.I have tried from 7psi to 12psi with no better results.The thing that i have not tried is adjusting the cal-tracs with my weight in the drivers seat. Thats next.My 60 fts are also slower than they should be. Just too much hopping off the line.
What are your thoughts on the use of a snubber? If you figure out the problem will you please contact me. I will do the same for you.
I dont race enough to do to many changes to my car. I changed to many things at once. My car went 10:59-127mph with a 1.511 60 ft.
Also tried from 1-9 on the rear shocks, with no great results.
Good luck with your car i hope you get it figured out. Its a beautiful car by the way. I love the 13.5s under it.
keep in touch,Rick.