1-2 accumulator spring question
1994 Supercoupe 4R70W w/ 3.73 rear gears. So the other day as I'm pulling away the car accelerates but doesn't want to shift into 2nd. Revs to over 3k, I let off gas, and then it shifts. This happens four times in a row and then I park it and drop the pan. The car does have some kind of shift kit or j-mod from the previous previous owner, but I don't have any details on it.
It still has the original 1-2 accumulator, and a broken purple spring on the bottom and no spring on top. I have the updated accumulator, and I still need to buy a new cover and spring.
So my question is: what spring, or springs, and where should I put it/them?
I was thinking of just doing an upper blue spring and no bottom, like would be done on a j-mod. Or should I just put the purple back where I found it (bottom)? Or all of the above?
I just bought the car and it was shifting great, 1-2 shifts nice and crisp, until the other day. I don't want the 1-2 shifts to be too harsh, they were fine before. But I also don't want to break another spring soon either.