What size front springs?

I have a street stock tube chassis with a camaro front clip. I run 5 1/2 x 9 1/2 front springs but im having to jack my jack screws way down to get my front ride heights right. This is putting alot of pressure on the springs. I was wondering should i run a taller front spring or what? I was wondering what others were running for front springs? Thanks for any help.

Same problem with my son's car we are going with 11 inch springs in all probability also going to 13 in in rear have same problem in rear to get ride hgts have to run jack screws all the way down

I was thinking of going with the 11" springs also.