2001 Wide Glide was blowing off the oil cap, so my son drilled a hole in the cap and it stopped blowing off, but leaking a bit of oil now. The serviceman sold me a new oil cap and said the problem was the oil cooler (small radiator on the front) must be blocked so he said I didn´t need it so he bypassed the oil cooler. Now it doesn´t blow the oil cap but seems to run hotter. Should I order a new oil cooler and install it ?