I went to replace the condenser on my 85 ATC 70 last night, but could not get the solder to stick to the condenser at all. Is there a trick to doing this? I have a 25w soldering iron and am using Rosin core solder. Is that not a hot enough soldering iron to use? I managed to get all 3 wires soldered together and then bent the tabs in so they made contact w/ the condenser. Loosely re-assembled everything so I could pull and check for spark and it is finally producing spark again. Could I just epoxy the soldered wires to the condenser?