Hi All,
I used Kenco heavy duty degreaser on the head of the Model 5 Victa....came up a treat....available from Auto One.
I soaked the head in it overnight and used a fine wire brush...no probs. wink
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