[klondike98]

Ah, now I understand your question...just a little slow this morning. Best to get a solder sucker and take as much solder off as possible, then work the leads off the tube socket lugs. Once the leads are off you can suck off the last off the solder and have a relatively clean lug to attach the new leads to. Sometimes the area you are working in can be crowded so there have been times I've clipped the old lead but left enough of it to use as a lug to solder the new lead to, but I usually take as much of the old out as reasonable.