Dahon 1x drivetrains: chain keeps falling off to the outside
i have a 2007 Dahon Speed P8. it has a 1x8 drivetrain. when i first got the bike, there was a plastic chain guard attached to the 53 tooth chainring to keep the chain from falling off to the outside of the ring. that plastic chain guard has since cracked and fallen to pieces. now, i have to deal with the chain falling off of the chainring about once every couple of rides. it's not the end of the world, but still pretty annoying none-the-less.
the LBS dealer where i purchased the bike was unable to get a replacement. so i contacted dahon directly and they said they didn't have any chain guards available as replacements. WTF? this part was obviously sourced from some manufacturer somewhere in the known universe, why dahon doesn't want to allow its customers to be able to get replacements for parts that break on their bikes is completely beyond me. i mean, it makes ABSOLUTELY. NO. SENSE.
dahon rant aside, have any other dahon owners run into this problem? what other options are available to me to keep my chain from falling off to the outside of my chainring? i thought about investigating bash guards as one idea, but i can't find a bash guard anywhere on the web that will fit a 53 tooth ring with a 5-bolt 110mm BCD (all i could find was a 5-bolt 130mm BCD for rings that large).