Aw Fabian, that's a real tough thing to say about one of the coolest, most generous people I have met in this industry! Dave from Arrow Motorized Cycles has improved these 2 stroke engines so much, for our benefit I must say! I personally have benefited greatly from his generosity in regards to tuning tips. Hell, the guy built his own foundry to make really nice big reed boxes for people. I don't know why you can't seem to order from him. This is what he does for work! Of course he sells his products: How do you think he pays his bills? Well, by selling the best reed valve kits and engines in the business. His racing crew is one fast bunch! Very hard to beat. It's like that because he acquired excellent skills through a lifetime of hard work. I bring these statements to you with honesty, for sure!