I've used slime in all my bikes, gpz, 600 bandit and a 900 hornet.

Had two punctures in two days once (work at an industrial site) and the slime kept it up. I rode it as normal and still ran the bike on the tyre for a couple of thousand miles until it was at it's legal limit.

I've never noticed any balance problems even at 140+, but I must say I've never put it in the front.

I know people have different views but I swear by it in tubeless tyres, but I'm 50/50 with it in tubed tyres. At least it's a peace of mind with fingers cross I won't have an instant blowout.