Hi there, did anyone successfully installed an S3 low compression insert on a 300 RR MY22, the yellow one? I tried today but the gas tank is not fitting anymore. The sparkplug is way to close because they say to use a BPR5ES. And you will need one with a long thread. See pictures.. just tried it out before installing by putting the insert and spark plug at the spot. Any idea? The only way I see is to turn down the thread of the insert to fit the very short genuine spark