If your bike is all stock then I would say no. If you really insist on messing with the carbs then I would strongly suggest putting the bike on a dyno with an exhaust analyzer first before you do any changes so you can see what the bike is doing as it is. I followed everyone elses recommendations for the carbs on my 77 750 F2 and all it did was make the bike run worse. 110's made it run horrible, 108's were better but something still wasn't right and all plug chops did was put me on a wild goose chase so I put it on a dyno and that's when all was revealed. I turned out the 108's were still way too rich but it was way too lean at part throttle so the stock 105's went back in, raised the needles 1 notch and the engine literally woke up. Try to make sure the engine is in good shape and tuned as best you can before putting it on a dyno because that's where my problems started. When I first got my 750 up and running I was trying to tune the carbs around an engine that was more tired than I thought and because of that it wasn't responding like it should've to any changes so over the winter the engine came out and rebuilt. Once the engine was fresh that's when it responded like it should and that's when I realized the carbs were way out in regards to jetting. Granted yours is a 74 and mine is a 77 but the point is Honda did a pretty good job tuning the bikes as they were and if yours is as stock as you say it is then any deviation from that may make it worse.
