Mellotronists

I want to try installing new tapes onto my frame by splicing it to 
the existing one and pulling it through.  I stopped by the local 
Radio Shack and they no longer carry splice kits or splicing tape.

Anyone have a source for splicing tape, or is there a decent 
alternative?  Markertek only has a VHS splice kit (90 pieces of VHS-
sized splicing tape).  Also - when you store your old tapes onto a 
reel, you normally join each section with some splicing tape, right?

Thanks