Bert, one thing thats worth trying is to buy a spare set of crystals and install..I had a dreadful glitcher once and new crystals fixed it..apparently sometimes they are not a good match and this causes poor performance.
Having said that, RCS gear will not glitch,Tony does a lot of his testing on my track as it has on ground level, and raised track with metal and timber deck and a variety of rail/track brands.. gordon Watson.