I'm no expert on raised beds Chai but if your plant production is good but less yield in fruit is less you may be low in phosphorous and potassium.
If the plants are nice and dark green then you don't need any more Nitrogen so 13-13-13 might be the best idea due to nitrogen burn.
You may want to get your soil tested by a professional too
Welcome and post all you want, if you want to start a thread on this subject by all means do so.
There is lots of good info on the soil building forum too.
Worth