Never thought to post this before now. Went on a ride to Wales the other weekend and the tip there on the storm was fantastic. Had a great day out un-till I rode back. I kept getting really bad pains in my knees. So bad I was having to stop every 30-40miles as I was in so much pain. They had been fine all day. On the way there I stopped at Uttoxeter for breakfast, Llangollen for a drink as it started to rain, Ponderosa cafe for a cream tea and scone and then on to Betws-y-coed for a hours rest inc lunch and a walk around. But on the way back constant pain in my knees. Could not explain it. Never happened before on either the storm or the SV I have had and I have done more miles than that before now. Could it be bike related??? If so are there any mods I could make? lower foot pegs, new set with the rubber strip or even a new screen as I have read the double bubbles can cause problems for some riders. I do not really get trouble with my hands just my knees now. By the way for any of you thinking it is age........ I am only 21

Any tips that will not cost a lot of money in case none of them work?