Canadian winters are harsh and very cold so in order to keep my engine in cozy territory, and when temperatures are below -5 C (23*F) I block my oil cooler with aluminum tape which gives me around 180*F oil temp. Satisfying indeed but the cylinders are not so happy with temps that won't go above the 275-300F range. I do block some airflow with duct tape on the cowling air intake (I know...this might set this thread on fire) and results have been satisfying but I find this solution to be a bit sketchy and unorthodox. What temporary (or seasonal) solution do most people use to restrict airflow? Has any carbon/glass fibre guy ever made something that fits that opening.