| On my 748, I wore a hole in the hugger the first time I changed tyres. A different make tyre, with a slightly different rolling radius, was all that was needed for the hugger to foul the tyre. Clearance on the stock sprockets is minimal. It's not uncommon to see Dukes with holey huggers.
This is another good reason to drop the gearing a little and go with a longer chain, as Shazaam! suggests. I went up only one tooth, from 14/38 to 14/39, but with a longer chain, and the hugger now has plenty of clearance.
Don't know what your bike is, eric, but you seem to have a similar problem. | 
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