Hi Fozz and a warm welcome to the forum. We are all "mower nuts" and like to learn new things and tinker here. These plastic carbies can be a nightmare and unfortunately outside my area of expertise, but hopefully Joe Carroll will jump in here and give you some good advice. Once again, wazzbat,
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