i have always paid mark half of the money up front and has never let me down , we have sometimes had to put collecting my parts back as hes to busy , and tbh i dont think people really understand how much work goes in to these parts , not just machining but fabrication ,painting etc . hes a one man band trying to do his best and please everyone and personally i think sometimes you have to wait for quality and parts that cost half the price of the orginals its a worthwhile wait