Thanks for all your replies Guys.
1. Well I changed the Battery first then the Bike was still loosing Power
2. Then replaced the Rectifier and Stator with aftermarket Parts from eBay but the problem was still there
3. Bought another Battery now which was more expensive but no luck
4. Took the Bike to a Garage and paid for a proper inspection and was then told I needed a better quality Rectifier, bought a OEM one with no luck
5. Tested my Stator output which was 59v so bought a OEM Stator from fowlers but the problem is still there and the new Stator reads 55v
The OEM Stator is actually showing a reading of 55v at 5000rpm whereas the cheap eBay Stator showed a reading of at least 59v so I am now thinking of returning my OEM one and sticking the cheap one back in.
Behind the Stator did I notice that my Flywheel was sort of Brown which may be a sign of it being burned and therefore having maybe weakened a Magnet behind it (if there is one) ?
So my plan may now be to return the OEM Stator to get some Money back that I will use to buy a Flywheel Rotor which I believe may be the problem but not 100% sure
I posted a pic of my Multi meter and used the second setting to the right to test the Stators which is the V~(200V) setting, I have also uploaded a Pic of my Flywheel which will give you guys an idea of what might be the cause of my low Stator output.
I did try the Stator resistance on my Stator but wasn't too sure which setting it is on my Multi meter, I thought it might be the Horseshoe 200k one but that didn't work for me unfortunately.
Thank you everyone for all your help and kind advice and hopefully will I be able to get my Bike ready for this years Summer