Channel balance replacement

my block and tackle balance is 37" and stamped 3650 with BSI rotated 90 and TL on it.I want to replace the balances on on the one window that has both tops broken off How can I remove the window to remove the balances when the top clips are missing and wont retain the balance?

well yes...maybe I didn't make it clear...in addition to both top sash guides being missing both channel balance tops are missing so that both balances have move to the top of the window which prevents me from removing the window. I plan on replacing both balances and the other pieces but the window must come out first

Ok good news...I got the broken balances out by using some sheet metal screws to catch the balances. one balance was a 3606 and looked damaged in the pullies and the other was a 3640. My good identical window had 2 3650 balances in it...go figure. I assume I should use 3650 types. I'll be buying new balances and sash guides from you

ok....I need two new channel balances. I've inspected an identical window that works fine with no broken parts.the sash weighs 35 lbs. it uses 37" long balances labeled 3650
The identical bad window had one 3640 balance and one damaged 3606 ...crazy no wonder its bad. so I'm guessing I need a 37"(measured only metal) in a 3650 type attatched are pix of top and bottom shoes from a good balance. again I want to replace both of the balances from the bad one as they cant be correct. what part would you suggest?