changed the membranes about a year ago, also changed the top filter about 6month ago, i actually have a new top filter which i will throw in i forgot i had it.
Yes backpack works fine except problem with the trigger 1 of the lads snapped it off somehow think only be a few quid for new 1, also i need to find the charger its hear somewhere just gotta find it but if i cant find it will need new charger also.
Thanks