Earlier this summer I purchased a 2006 Electra Glide Classic. I have always noticed a little rattle/vibration in the engine area. I narrowed it down to the shift linkage rod having a little vibration/rattle in it. It appears the original one was swapped out for an upgrade that says HD on it. Is there something I can do to get rid of this? Another question I have is (my bike came with a 2005 manual) I changed the transmission oil & put in 24 ounces of oil. It seems to be OK on the dipstick. Is this the correct amount?