Kevcules
Site Supporter
Thanks.....What would be my target oil level?5wt is stock on the 1100, not sure about the 1300, but they are typically similar in many regards so it wouldn't surprise me if the 1300 came with 5wt from the factory. In that case you're currently using a heavier oil than stock.
Bmacleod had an excellent suggestion to double check the oil level. If its too high the compressed air becomes another spring in the system, and could explain your symptoms.
I think I recall reading that the 1300 springs are much shorter than the 1100 springs, so I won't try to advise you at all regarding springs, hopefully the 1300 riders can offer experience and advice regarding that.