The gaffers tape is there to cover the pyro set up for the sparks when he cuts the shotgun, I think.
Ob1al, looks like you and I have the same model XL. Mine, too, has the letters in lieu of the symbols. I never realized there was a difference.
Thanks for pointing that out, Howlrunner. Your chainsaw looks awesome! I like the shot with the Necrocomicon. Great work on the weathering. The rusting on the t-bolt and grill is really well done.