I think I have the same boiler as you. When I started using mine I lost more than I did with my old plastic boiler. I keep the boiler on 110 to get a nice rolling boil.
Simply add a few litres to your sparge water to accomodate.
Hi Dan,
I used to have a Bruheat Plastic Boiler which I got from the Home Brew Shop and this is the strainer I bought...
http://www.the-home-brew-shop.co.uk/acatalog/Universal_Hop_Strainer_for_Bruheat_Thorn_Boilers.html
i was pleasantly surprised when it fitted into the Buffalo's tap! Mine...
I used my new Buffalo yesterday for its first brew and am really impressed. It achieved a nice rolling boil with no modification and looked shiney!
I did lose 2-3 litres more to evaporation, but simply topped the FV up at the end with boiled water. Any reason why next time I shouldn't increase...