Strange carb settings

[jimbob007]

Hello.
I have an ec200 hobby 2006. I've recently bought the bike. It uses a lot of fuel. I've looked at the carb settings and it is as follows. Pj 45 , main 168, needle NOZJ and #5 slide.
These setting don't seem like any others I've looked at on line.
Why has it got a #5 slide?
It won't tick over, I've tried different pilot jets and no matter what I do adjusting the air and idle screw makes very little difference.
The reeds look good also.
Any advice would be good. Thanks

 

[roverhybrids]

If you have the 38mm carb, I think the 168 main is on the lean side
I was running a 36mm carb on my 200 with r1370eka in #1 or 2 with 40pj and 172 main

 

[jimbob007]

Thanks. I've got a new needle and carb base gasket coming to see if these will help