I'd had my Centurion LeMans RS since 2019, but never really got a bike fit adjustment for it. I thought my issues -- getting tired easily, hand pain at the palms -- were technique and fitness issues, but a few bike fit adjustments made a huge difference!
All we did was raise the seat for full leg extension (I.e. more efficient pedaling), change the stem and handlebar for a more upright, comfortable ride, and add a double layer of grip tape. I've also ordered padded gloves that I hope will help. I'm excited to bike more places!
You may also want to pay attention to how hard your gripping the handle bars and make sure to have a neutral position on your legs when coasting. These are 2 issues I ran into and it made a huge difference to how sore my body was. I was subconsciously death gripping the handles and would almost always have one leg fully extended when coasting that would cause me issues.
Good to know! I don't think I deathgrip them, but I'll try to be conscious of it on my next ride