my unrealiable Peugeot v-clic is driving me crazy?

I own an 08 v-clic that's a pain to start. Fitted a new spark plug and it started lovely from the electric start.... for a week. Then it would take a few goes of the button and a bit of throttle to get it running. Within 2 months it would only start from the kick start (unless the engine was warm) started first time off kick start. A week later I needed to kick the hell out of it for it to start. Changed the plug but within a month i was back to kick starting the thing. Any idea why my ped is killing spark plugs so quickly?? My very non-mechanically minded hubby is getting fed up of taking the ped apart to fit new plugs and my poor foot is fed up of kicking starting it

additional info: had a new throttle cable, starter motor, plug cap and gel battery fitted under a year ago. Also the bike makes a horrible noise when you press the electric start button (grinding and clicking) has done since i bought it.