Hey guys, I'm new to the forum and this is my first post so I apologize if this topic has been discussed. I did a couple upgrades to my grom all at once and I'm not sure what couldve went wrong. I put in the high rpm/colder spark plug, tbr full exhaust and did a valve adjustment on the same day. I notice that its really hard to get passed 7.5k ish rpm at wot on 4th gear. My top speed is around 55 ish sitting up and it seems to really struggle to get to 61 with full tuck. Im 5'8 , weigh about 170 and I've seen plenty of posts of bigger guys that can go faster than me so I'm wondering if something is wrong or does my speed sound about right? Could it be the colder spark plug? The full exhaust without a jet kit? I did notice my low end power seems better than before. The ecu has reset since then by the way. I did double check my valve adjustment and it seemed good but I guess I might have to triple check. Any help would be apreciated. Thanks.