Oh noes!

Lv 50 Guns drop from the Book Ghost, Ginseng Pots, and Firebomb.. Try them..

Try lv 40 overall from Platoon Chronos
Lv 50 overall from Jars or Jr. Yeti (You guys don't have Iron Mutae yet.. which is the best source for them..)
Lv 60 overall from Croco, Mr. Alli, Reindeer in Mu Lung, Samiho, or Rombot.

OMG TY i was worried where i would have to go to find the lvl 40 thru 60 overalls, so far its looking like my max overall will be 40, zhelm brings me to 50, and with 5 dex from shoes and 10 from a cape, ill be looking at either a lvl 60 or 70 overall. Ill decide which is better when i see the stats each offer.