Oversteer and front tuck?
Oversteer is the back end stepping out, the roads are slippy at the mo, try using less throttle!
Are you sure its not just a feeling of tucking?
I think if the front was really tucking the chances are you'd be lying under the bike on the other side of a hedge.
My dad and brother had a K1 and it always felt to me that the front was tucking, but it was just the way the bars moved which felt unnatural to me. Having tried to keep up with them on the K1 on various machines, it was obviously me not the bike.
It sounds to me like you are fighting it rather than trusting it. It will run wide if you think its tucking and are stopping it from leaning over further.
Cry bollocks if you like, but if you are losing the front end consistently on an RT then you should be on the track.
It could be a shite tyre or a mechanical issue though, a dealer should spot it fairly easily if its the bike.