Unless you are cutting through nails or gravel or something, a good blade should stay sharp for a long time. Either what you're using is not a good blade, or they're likely just dirty.
Use a good cleaner and a brass wire brush or something to clean it up. Problem solved.
I use this stuff: https://www.amazon.com/dp/B003OC35MQ?psc=1&ref=ppx\_yo2ov\_dt\_b\_product\_details
Thanks man, I've calmed down now and have 5x FEP sheets on order which'll arrive tomorrow, scratching new things / not being able to keep everything spotless was really bugging me and not being able to get rid of the weird ghost residue on my FEP, after having just permanently scratched my UV shield (which isn't a huge deal) got to me.
On the plus side, I've got some industrial residue remover coming tomorrow which may help clean my UV shield, and it'll be a good practice to change out the FEP screen with the new ones coming tomorrow :)
Diablo is a great brand, definitely not the best, but at the price point they are great. I've never used Avanti pro but I have some Avanti and they are junk. If all the factory blades that come with saws, Makita is the only one that is good, DeWalt and Milwaukee are bad, Bosch was decent, but Makita has been the only one I keep until it goes bad.
In use this to clean my blades, Trend CLEAN. It works great and is biodegradable. It might be similar to simple green.
Buy a product called tool cleaner from trend. It’s amazing! Sold on Amazon for only $10.
Trend CLEAN/500 Tool Cleaner Industrial Strength Wood and Resin Remover, 18 fl oz https://www.amazon.com/dp/B003OC35MQ/ref=cm_sw_r_cp_api_glt_fabc_DT3FC4XAKHX2BQ6BWP57?_encoding=UTF8&psc=1
The yellow you are seeing accumulate on the blade teeth is likely resin from the wood. Trend offers a nice biodegradable cleaning solution.
Edit: bad link