Depends on how well those tires are working out for you for the race. Are you convinced there the ticket to race on ? OR are you lacking speed to race ?We usually race a 3oz tire that’s 2 week old roll that hasn’t been wiped until you get to the track. Should I try a 4oz tire that’s been wiped and put up for a week?
Tough to answer your question 100%, might not need the more Internal just rolled 1 week out wipe some during the week could be the ticket, Then again your on 90 cc to race 120 cc doing same as your doing could also end up the ticket, In general USUALLY little softer with more bite added and higher air than you race on.That’s usually what it takes to win.