Spc upper and lowers on 69 camaro

[Jamie496]

Hey guys got a question want to see if anyone has any experience with this problem . I recently installed Spc uppers and lowers on my 69 camaro with Dse lowering springs after multiple times adding ride height shims on the lower spring pockets currently using the aluminum 3/4 spacer and 1/4 spacer on each side It has about 1/4 inch between the upc arm and the jounce bumper but after it sits for a bit the car will sit right back down on the jounce bumpers , barely but still sitting On them just wondering if anyone has any input on this maybe using a bb lowering spring might help !! Its aluminum headed Sbc seems like the Dse small block springs would be plenty any help greatly appreciated!!