Part number 463.112 is very prone to distortion...I have had some made from a thicker material to cure the problem...This also helps the spring 463.114 if it isn't a new one, adding a little pre load to compensate for any 'settling' of the spring..
Contact me off forum if you want one...Ian

email (option): ian@wright52.plus.com

Thanks Gents,

Ian, I’ve sent an email to you.

Thanks again , G.

email (option): gino_kerekes@yahoo.co.uk