Hi oldmatty, and a warm welcome to the forum. It's great to have you aboard. grin
Now to your problem;
There is only one sure way to rectify this prob and that is to replace the carby body...the reason is that its not possible to re-glue or attach the nipple back in place properly and air leaks will inevitably cause probs and erratic running of your T-A-Cut.

Your machine uses the Victa G4 carby and the body is available as a spare part in the Online store....Click HERE
This body is used on both the powertorque and Series 80 full crank engines (ie, Victa T-A-Cut)
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