Welcome to OCC !
You could have the axle hole over bored and a steel sleeve made slightly oversized for a press fit and replace the pin if it's worn , or bored and fitted with an oversize pin, ( machine shop work $$) if you can't do yourself ,also if not already done upgrade front axle to one with the 1 inch spindles to carry the weight of the loader better . Also be careful with a load in the bucket as it will lift way more than it can safely handle,don't have the load up in the air very high and try to turn very sharp, bad things will happen ,like upsetting ! how do I know ?
They work great but have there limitations !!