I have a friend who owns a 2005 Suzuki LTZ 250 just yesterday it started acting like it was hitting rev limiter but way to early. His friend is a mechanic and he thinks it might be something in the valves. They want to go in an adjust the spacing, but they don't know what the required spacing is. He said something about going in with a feeler gage to adjust the spacing between the heads, but adjusting it doesn't do any good if you don't know what it is supposed to be. I'm sorry if this doesn't make sense I'm not good with all this stuff he just asked me to help him out. If you know what the problem could be or have the answer to our question please help he has a race tomorrow night!!

Thanks