What are your opinions on storing a trike on its grab bar? Is it better to drain the oil out of it before? Would it be better to leave the oil in it and take it down every few weeks and kick it over or run the motor? Just needing more room for storage(more trikes) and not wanting a good engine to go to crap. I have fears of rings sticking and valve seals drying out from lack of oil. Is that even possible?