Hey grumpy, here's a tip for ya, the best tool for cutting the sponge to size is an electric knife the missus uses in the kitchen for the roast lamb and beef.
P.S. A good idea not to tell her or chainsaw lol
cheers2

Please do not PM me asking for support. Please post your questions in the appropriate forums, as the replies it may receive may help all members, not just the individual member.
Kindest Regards, Darryl grin