I recently got gifted a Juno 6 which shows some funny behaviour after warming up for 5 minutes. one envelope Generator starts to act up; the release time can be only set to 0% or 100%, and when set to 100% the note just keeps hanging forever.

unfortunately it is (virtually) impossible to get hold of an IR3R01 so I'm not really left with many options. Either I chop up the Juno for parts or I put in another chip like the AS3310 or the Druid to fix the Problem.

Do you guys have experience with any of the 2 alternative ENV IC's?
Should I just desolder all the R01's and put in 6x AS3310's?