I have a 2002 Lazer Z with a 25 Hp Kohler on it and whe it was new it had the solid zero flat tires installed as an upgrade. I cant seem to get front wheel bearings to fit it now. The replacements for the Z are cone bearings and too small. It had ball bearings in it. The closest I found will fit the hole in the rim but the spanner bushing diamater is way too small. I had another machine before that had a spanner inside of a spanner to make up the difference. Any ideas on where to find bearings to fit would be appreciated.