Plz fix this it will make the game way more fun

I think this is one of the best motorcross games but theres one big proble thats markeing me not like it . I got a new bike but dident like it so got another one and then found a cooler one and bought that 2 so I had 4 bikes at first I thought it dident matter but then I figure out that to in lock the thing that make it so you can upgrade your bone further ALL YOUR BIKES HAVE TO BE AT THAT LVL so to unlock the next one I have to get 4 bikes to LVL 20 and Im doing 4*the work and its markeing the game not fun at all and I dont even want to play it cuz Im so mad. If someone could make it so you can delete bikes and fix this tho would make the game so much more fun. Plz read this and fix the problem. Thank you:)

I have like 50 friends that agree about Ricky Carmichael's Motocross Matchup Pro