Ender 3v3 Plus - X Gantry Rod - Bushes / Bearing Replacement Parts - Grinding noise and Layer shift

After 850 hours printing I’ve noticed that on the X gantry there is wear showing on the top rod along with a grinding noise when the print is in the middle area of the table.
Along with this I’ve noticed lots of layer lines appearing on the rear of models ( Backside of the model when looking at the front )

i stupidly greased the top gantry which has probably caused the top bush to fail early but I’m having trouble finding replacement parts.

Does anyone know where I can purchase these from, looked all over the net and nothing so far.
I’m in the UK, any help to point me in the direction of where I can purchase these would be greatly appreciated.

Amazon is your pal.