Bought my son a bike and I am unfamiliar with them. I’ve always rode atvs so this is new to me. The bike has been totally rebuilt with upgraded parts. It does start bogging mid throttle but runs good once you give it throttle. The guy I bought it from said it needs bigger jets to match the build. My problem is I can not kick start this thing to save my life. I have got it to kick start one time only. I can roll it off and it cranks every time. Would the jets have something to do with this or is it a separate issue? Thanks