Kanye West has sold his $500,000 tank to the Diesel Brothers. The ‘Stronger’ hitmaker’s team first reached out to the vehicle customising duo – friends David ‘Heavy D’ Sparks and David ‘Diesel Dave’ Kiley – a few years ago to have them work on his trucks, but the timing never worked out, and then last October, the 44-year-old rapper’s representatives got in touch again to see if they wanted to buy the Ripshaw. The pair jumped at the chance because the waiting list to get one is around three years, and headed down to Kanye’s ranch in Wyoming to pick it up. However, there is one problematic quir…