upgrading the wire feed drive in a wire feed welder

[alabbasi]

All,

I own a 220V Clarke 180EN which is a ~$400-500 welder (better then HF worse then Lincoln).
For what i've needed, it's served pretty well however the wire feed is not that smooth and tends to feed in humps. Is it possible to purchase an upgraded feed that's more robust and smoother in operation?

This is a stop gap as the ultimate goal is to purchase a Hobart Ironman 230 in the next year which will be a much better welder.