I guess steering wobbling @ 55-65 speed is seen only if you leave the handle .. otherwise you may not even feel it .. i have drove my stock (without any engine mods) til speed 120 .. & have noticed bike wobbles .. you need a lotta control @ that speed ... i try to grab my handle tight to light .. depending on occasions for high speed riding .. n yess i have UG1 .. with stock fork rims with new tryes for the same wobbling issue .. but doesnt seems to be fixing .. but i know a good mechanic store in Kandivli "Maruti Auto Center" who specializes in Bikes .. they do their job very well in the well-being of the bike which was recommended to me by a friend of mine who used to ride Pulsar 180 UG3 .. but the shop has lot of customers to serve in any given day .. hence it takes time .. but its a Job Well Done !!

Incase you want more detials .. let me know .. i may post their visiting card here .. Bye