Probably do better changing the sprockets than trying to get into the engine. 90hp from an air-cooled inline 4 that meets various markets smog requirements is quite a feat.
Weren't much better in the TX Hill Country today. Rained last night hard and today only go up into the upper 40s and was windy. Supposed to get warmer soon. I took a 200 mile ride Wed before Christmas and it was in the mid-80s and cloudless... perfect riding weather. Hope you didn't get caught up in those twisters that went through there recently!