can any one help me i just bought a 2005 gasgas pro from a shop last week when i started the bike up and put it in to gear it made a small crunch in nosie when i put it into first gear rode the bike for about 5 mins then parked it up , yesterday when i had it out to clean it up a bit i started it up again and same thing agian but when i put it back into netural and pushed it back into first no nosie then was this because the bike had time to warm up ,when i spoke to the shop he said that all pro gasgas do this because they only have 4 gears the move up and down the shaft alot to make up the 6 speed box