Help me to attach inner ring I have cranks with 4 holes for outer and middle rings attachment. There are no holed for inner ring attachment. On my other bikes crankset middlering has 8 holes 4 for cranks and 4 for inner ring. I tried to take them and attach to my other outer chainring and cranks and put it on bike, everything works perfect. The problem is I can't find  middle chainring with 8 holes for sale in my country or on ebay. Should I drill 4 more holes on my crank. Or what should I do please advise!

Some IMGS:

I. My other middle chainring with 8 holes, I can't find it for sale:



II. My crank inner side with 4 places for drilling maybe :D
I dont remember how did I connected here yesterday, so now I writing connected with gmail with my phone.
Anyways, I took 32T attached to 22T from XCT SR SUNTOUR V3 22t,32t,42t crankset, I bought it from ebay, sorry cant give you the link now. Cranks with 4 holes only are FSA alphadrive. XCT also has 4 holes only on crank.

EDIT: cranks with middle chainring which has 8 holes.: http://www.ebay.co.uk/itm/280915668543?ssPageName=STRK:MEWAX:IT&amp;_trksid=p3984.m1423.l2649