hy fellas i have a question about my bisson muffler , it is on a fuji 43 . to make it fit in a gp cap 232 i had to do some alterations . now i got it set up with slimline smoke pump and no matter how much or how little oil i put therw into the muffler it is seems to leave the bottem of the plane coverd with oil . i canot get dri oil here. so i am making my own with dessil and trany oil combo. could this be the reson for the unburend oil or is it normal to have oil under the plane when using smoke?