i had the same thing happen to me. first
i use a spinet piano, roland tr505 drum
machine, and a set of bass pedals. everything
went great. then i added a synth on top to layer strings and a computer to add midi
sequences and it changed the perpective
of the crowd and a drop in tips. now i use multiple keyboards and no tips. i thinking about, dumping everything and going back to the basics. at least i'll keep my fingers in shape instead of using arrangers... i'll
be doing the work. hmmmmm maybe that's how
the crowd see it. who knows, just do what makes you happy and the rest will follow.