KX 125 gearbox issues
I'm new to the forum and was wondering if I could get some advice. I was riding my 2003 kx 125 yesterday and sadly my day was cut short by some mechanical issues. I dropped my bike on a corner (nothing unusual about that), but when I picked the bike up and tried to start it I found that it kept dropping from neutral into 1st without me touching the shifter. Obviously this isn't good I was just wondering if anyone had experienced the same thing and had any good ideas of where to start. I only rebuilt the top end 2 hours ago so it would be great if there were any checks I could make without having to split the case.
many thanks in advance