CB360 Pods

I'm having trouble with my carbs I no longer have the stock airbox and from what I can I find the 360 runs poorly with pods my bike has a hesitation or loss of power at mid throttle this goes away when the put the choke on about 1/8 to 1/4 from what I understand its because the pods throw off the vacuum and the slide no longer works as it should. so I'm thinking if I can find some more restrictive filter that should help. I have a 74 Cb360 and from reading through this forum it sounds like the needle should not be adjustable on the carbs but mine are I don't know if someone stuck different needles in there and maybe the taper is wrong and that could be causing issues. my jetting is factory and when moving the needle up or down it does help the problem it never goes completely away so I thought maybe going from a 110 main to 115 would help but after reading your posts it seems more likely its the filters? also the bike didnt rev past 3,000 - 4,000 rpms which is when the slide kicks in so my guess is the vacuum was not enough to open the slide