Hi there shireboy

1. I haven't done the rimfire airbox mod but have discovered the following: You will need to change jetting as soon as you change anything on the airbox - I tried the larger airbox snorkel and it ran way too lean. I've changed my silencer for a straight through unrestrictive KTM SXF silencer and that hasn't made the bike unrideable with the standard jetting. I do have a K&N airfilter also. I'm trying to get some larger jets to see how they work with the larger snorkel. Do look up the KLE 500 jetting thread: http://www.horizonsunlimited.com/hub...ing-carb-41935


5. Wrt the seat: I'm 6'3" and I found the dip in my KLE seat a real pain. The seat was also on the softy side. I scrapped the original seat cover, bought a block (300mm X 700mm X 150mm) of stiff chip foam, softer 1" thick foam, and some tough vinyl from a local upholsterer.
I removed as much of the original foam as possible, just leaving enough to glue the new foam onto. I then covered the hardish chip foam with the inch thick foam and used the new vinyl to cover that all. I used an electric carving knife and marker pen to in shaping the foam.
Here's the result - a flat, high, hardish seat. I weigh about 80kg. I did about 600km on Saturday with not too much discomfort - I'm able to sit further back along the seat now, and also move up and down.

Check out the attached pic:

Hope you come right. Let me know if you'd like any further detail.

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