i just acquired an old 1973 A 22 Harrisville. loom has been well used and I’m putting it back the way it was. ordered new ribbons for front & back beams and for the life of me - I can’t get any of my staple guns to staple into the beam. Maybe it’s too old and hard. I attempted to put texsolv on the beams but it won’t “catch”. I know I stapled onto other Harrisvilles but not this one. Any suggestions?