Makita RP1800 3-1/4 HP* Plunge Router https://www.amazon.com/dp/B002MUAMFE/ref=cm_sw_r_cp_api_glt_i_S6NP33GKQB2H3Q4B7FPY
I’ve done hundreds of slabs with this router mostly hard woods. Always blow it out after each use or every 30 minutes of use and ive never had an issue
It’s most likely still pretty wet,
General Tools MMD4E Digital Moisture Meter, Water Leak Detector, Moisture Tester, Pin Type, Backlit LCD Display With Audible and Visual High-Medium-Low Moisture Content Alerts, Grays https://www.amazon.com/dp/B00275F5O2/ref=cm_sw_r_cp_api_i_zoEBFbB38M4KM
You can test the moisture with a moisture meter like this. For now it would help if you paint the ends with something to seal the end grain. Hope this helps