I have a gulf coast o-1 bypass filter,- my question for everyone is , what is the best type(brand or model- part number) of paper towels to use in this unit, i have used the commercial type that you find in restroom at gas staitions or resterants,the problem with these is that there not long enough to fill the canister, i have to put one roll in , and cut another roll down with a razor to fill it to measure the same distance, they in my opinion are a lot more dense than the one's you find at the supermarket, i spent a couple of hours today looking at the different types of brand in the grocery store and the sparkle brand had the most square footage per roll , any info would help.