i also had to make the brakets for the trans and i used pan head stainless screws to fasten it to the hull and also used alot of silicon below the mount to take up any vibration to the hull ....mr fine from fine designs said my setup will be well in the forties close to 50 set up right so i hope it does 45 and has some run time , next year im going to switch to lipo packs too..