I buy this gun on airsoft canada, the gun was broke and nothing could let me know .
So the gun has already upgraded parts like that:
http://www.google.ca/imgres?um=1&hl=...w=1440&bih=817
After seeing that i decided to keep it and fix it.
So the tappet plate is new, the nozzle is a bore up nozzle like this:
[URL="http://www.wgcshop.com/wgc2008/main/product_detail1.php?search_From=searchItem&item=DF-CPN20M&search=special&rs=p90%20marui&catid=&cat="]
http://www.google.ca/imgres?um=1&hl=fr&client=opera&sa=X&rls=en&channel =suggest&tbm=isch&tbnid=mKMMl6HMKiMe2M:&imgrefurl= http://www.wgcshop.com/wgc2008/main/product_detail1.php%3Fsearch_From%3DsearchItem%26i tem%3DDF-CPN20M%26search%3Dspecial%26rs%3Dp90%2520marui%26c atid%3D%26cat%3D&docid=v_7ZOgX0yCWqFM&itg=1&imgurl =http://www.wgcshop.com/WGC_Shop/images/df_cpn20m_m.jpg&w=400&h=262&ei=n4kuUK_nIqbh0QH7tIG gDg&zoom=1&iact=hc&vpx=190&vpy=460&dur=3828&hovh=1 82&hovw=278&tx=178&ty=78&sig=115085553316766501733 &page=1&tbnh=151&tbnw=221&start=0&ndsp=28&ved=1t:4 29,r:14,s:0,i:117&biw=1440&bih=817
This lunch time i have try to put the delayer, nothing change on the issue, so i tried to put a little plastic plate of 1.5 mm en front of the gear box to make it less far in the hop up chamber but nothing change...i m going to join you picture this evening to show you exactly the issue. (sorry for my bad english , i'm french =) )
For your question , here i didn't know where buy a marui for a real price and thats why i have an echo 1... My barrel is a tanio koba twisted and my bore up upgrades are guarder for e90.
The sping of the tappet plate is at this place, nothing is broke in the Gear Box.
Thanks a lot for your help, soon pictures !