Ares AW.338 (CNC) and PDI Upgrades?

Evening Gents,

So, as I found out, none of these companies have contact numbers. Lovely. Anyways, company reps will tell me buy their stuff, that's not what I need. I need the guys who run the guns to tell me what I need.

Bought this gun, no going back, its comfort level is unparalleled. Out of the box it's bloody fantastic if anything the range is a lil short and in canada it's gotta be only 380. Field limits are 500. Brought it into the shop after a few months. They tell me theyve got the sear and the spring and that should be enough. I'll take their word as theyve not done me wrong yet. Turns out the sear they have didn't fit and damned if I'm gonna even try firing that gun with big spring in it without the structure being reinforced.

So, not entirely trusting the shop to find the right parts I decided to take this into my own hands. I stumble across PDI's webside and their drop in trigger kit along with the raven kit for the cylinder. Both look good, the sear looks appropriate in size and it's made for this rifle so my logic being is that it would fit. I am completely fine with tossing money at this to make it run as smooth as is humanly possible. (There are no words to describe how much I love this thing). So basically, I need someone just to double check what I've got:

Raven (PDI) Cylinder Full Set for ARES AW338 Series(Clearance) - Buy airsoft Accessories online from RedWolf Airsoft

PDI V Trigger + Piston End Set for Ares AW338 - Buy airsoft Accessories online from RedWolf Airsoft

and, what spring, because I know I'm supposed to use a "fat dia" spring. but from what Ive read you need to use a 13mm Inner Dia spring, but the piston hole is 13mm, which means its a lil over 13mm but still an OD 13mm spring would be more appropriate. (Ref: X-FIRE PDI official distributor )

Thanks for reading my longwinded ridiculousness and thanks even more if you can help a brother out.

~SI