Ok so Santa bought me the intim's but one or was it two have changed the spacer size. Now whilst I intend on using 5 weight oil, can anyone give me a definite reason for resizing the spacer besides it appearing to make sense. I mean was this part of the instructions. Apologies for not looking through them myself.

Staintune Pipes, K&N Pods, 45 pilots, TBS needles and 145 mains.