Yes do join the RGV forum, and do get those powervalves checked / replaced. 10,000 miles is a typical mileage that the engine tries to eat the powervalves on a RGV VJ22. Ask on the RGV forum about getting hold of Stan Stephens (UK tuner) modified powervalves. They are designed not to fall into the pistons! I'm sure someone on the RGV forum would help you in getting a set. Good luck and happy riding!
_________________
Rich
MC21 Track Bike / RS250 NF5 'Spencer', NX5 'Cadalora' & NXA 'Aoyama' / RS500 / Two Brothers Racing RC30