Had my RMS replaced and it leaked 1500 km later.I thought the mechanic that did it just did a poor job so i went to another place and that guy said the crankshaft had a groove in it from the seal that is contributing to seal not working.I wish the first guy mentioned this.Anyway i wondering if any one else has encountered this problem.Did you just drive it or replace motor or replace crankshaft?The past owner had the bottom end rebuilt but i dont think they took the crankshaft off thus not noticing the grove.