ok. im wondering if that might be the problem. its the only thing i can think of. both testers read pretty darn close to the same. if thats not it, im not sure what else it could be?
i work at performance coatings plus. we are in joplin missouri. have have a black ceramic that is good to around 1400 degres. and it is beautiful. we sandblast everything before its coated. we also ship. if you call ask for rick. http://www.performancecoatingsplus.com/index.html
just got the shee running today. im in missouri and have 17cc domes. the compression was 135 for both sides. is this too low? its on a fresh reduild. thanks for any help.