having trouble getting my blaster to run right used to run great then all of the sudden started having problems it will start off just fine but when you touch the throttle of it will just bog out. we have gone over and change anything you can possibly imagine carburetor and electrical related. the machine will start up relatively easy once it's warm will start with 1 kick but won't rev up when you pull the plug it's wet like it has poor spark. has anybody had a problem like this?