1st Gear issues

Hi all, found out about this forum after some bloke stuck his head out the car window at a set of lights and handed over some forum stickers.. Not bad!
So i'm piping up now cos i'd like some advice. Basically the bike i'm on (a '99' zx6r) has developed 1st gear issues as in it likes to jump out of 1st gear when a fair amount of throttle is applied (even if i stand on the gear selector). I've been riding around for a few thousand k's and it runs fine as long as you dont juice it up in 1st gear.
So i'm just wondering what are the likely components that will need replacing? Most places have been advising of a rough $1500 for the job. Is this about right?
And has anybody got their bike repaired at Cosways in the city before? Are they any good??
Feedback appreciated.. as i'm doing my head in about weather or not to get it repaired or just get rid of the bike and get a 1000cc

So i'm piping up now cos i'd like some advice. Basically the bike i'm on (a '99' zx6r) has developed 1st gear issues as in it likes to jump out of 1st gear when a fair amount of throttle is applied (even if i stand on the gear selector). I've been riding around for a few thousand k's and it runs fine as long as you dont juice it up in 1st gear.
So i'm just wondering what are the likely components that will need replacing? Most places have been advising of a rough $1500 for the job. Is this about right?
And has anybody got their bike repaired at Cosways in the city before? Are they any good??
Feedback appreciated.. as i'm doing my head in about weather or not to get it repaired or just get rid of the bike and get a 1000cc
