Peugeot Speedfight II starting problems

Hello,

I have a 2010 Peugeot Speedfight II 100cc scooter. For a while now it's been terrible at starting when wet or damp. If it's sunny and dry it will start no bother but if it's been left out in the rain or damp all night it can take 20 minutes to get going. The other day when it was like this I fiddled with the plug connector and it seemed to improve but it still took an age to start. Once it's going it's fine. I think it must have a poor spark in the wet. Any ideas?

Please help

I didn't find the right solution from the internet.

References:
https://www.bikechatforums.com/viewtopic.php?t=217763
Creative video production company

Thank you