I live in california and I am considering purchasing a rebuilt motor for a 1982 240D. Adsitco has a lower price than any other outfit I have found $2695, $400 core, $600 shipping. I have read some negative comments, and some positive here. Any experience with their rebuilt engines? One year unlimited mileage warranty. I bought a used motor a year ago for this car from ASAP motors out of Houston and got burnt as the motor was bad...What do you think?