carb sync

Would anyone be ok with loaning me their carb sync tool? Things have been a little tight lately to fork out the cash to buy one, and I really need to fix this bike up. I've seen some videos for these homemade manometers but I just cant see that being accurate enough. Im in New Orleans, Louisiana.

Per Sean, I dug out the Y section for the airbox and put in 1/4" spacers. Guess what? It runs BETTER! Before I converted to COPs, the bike would want to die at idle when it got hot, so I bumped the idle to 1250. (figured it was the carbs not being synced - hadn't gotten the sync tool...

Hi, wondering if someone has had this problem. Carbs synchronized but still idles rough. Took her out for a test run after I synched the carbs. Cracked open the throttle and took off up to 6500 rpm then nothing. It felt like there was no gas getting to the engine, just flat. New fuel filter...