Ok started this thread in an effort to assist all L Series owner, this hopefully will be a thread that will be use full as a quick resource for all to use. My goal is to make life easier and less stressful for all needed L Series owners. So my firs issue and i hope there has been someone that has figured it out is with an addition of a koyker loader to a L235 all the mounting fab for me was simple it took alot of measuring and existing mount refab to get it installed, now the issue is plumbing. i have seen people post all over google to interupt hyd line from pump to 3point and tie a loader 2 spool control valve whether it be two lever or joystick, float or regen, all should hook up the same. I have purchased a joystick valve with float and one without. With float and regen from surplus center pt # 9-7401. and power beyond cartridge. upon hook up 3 point worked well but loader up and down had no pressure and very weak. suspected it needed bleeding did all i could and simply felt valve defected and bypassing. The plumbing was simple. Tied into pressure side of pump to 3 pt welded fittings, then to valve port, added return to tank with fittings, power beyond port back to 3pt. fluid had signs or air when loader was in use. I decided to remove valve and purchase one from Bailey pt number 220910 no float or regen thinking less options simple install. I plumbed it this time with a divert er valve to isolate ea circuit. hydraulics performed the same no change. My thought is there has to be a return to tank but also can feed the 3 point, so i have to cap the all but the psi port and tank port hooked up to 3 point so it can create and isolated circuit. my worries and not understanding if i hook it up this way on cylinder collapse there is no were to fluid go. unless it goes through 3 pt if anyone can help id appreciate it .