I want to thank everyone for their great responces. I got the new combustion gasket and installed. I also, per mike bought a co detector with a digital readout. However, havent been able to set it off which is great due to the new gasket. Also, Mike, my husband brought the old co detector downstairs for the test we discussed and it only blinked red but didnt beep. So, anyway, looks like were on our way to pellet stove success. I will monitor the boards though for new tips and tricks. Thanks again.
