Have had this bike for 6 months now, but suspension seems to be damped too much (no bounce) on both wheels.I am going to refill front forks as suspect this has not been done for a while, but both fork leg top clickers are jammed (screwed right down) anyone sorted this problem? Any information about back spring- seems to have 2 lock nuts on thread for spring and an air valve on top would also be appreciated. Thank you in advance.