kakeypig

I have posted on here before about this but just thought I'd see if anyone else can help?! I have checked the oil in the glass sighting level and it looks to be full, although the oil looks quite thick - does anyone know if the thickness of the oil could cause problems with the gears? 1st and 2nd are ok, but 3rd gear is very difficult to get into and sticks. My worry also is that the oil looks very clean, so the former owner might have had a problem with this himself and not told me. Failing the problem being the oil mixture, is there anything else that anyone can suggest? My last option is to dismantle the gearbox altogether and rebuild it (though I am such a novice at this that it may not be a good idea?! Any advice would be much appreciated. Thanks a lot

I have a Beta 250 rev 3 Trials bike, and there appears to be a problem with the gears. 1st and 2nd are ok, but sometimes when trying to get into 3rd it sticks and will not move. can anyone advise me? Do I need to use some form of gearbox oil? I am new to this and don't really have a clue as you can probably gather!!! Also stuck in the middle of france so getting advice is not too easy!! Thanks in advance