If you have a Mikdo Logo 800 XXTREME then undoubtedly you have spent a significant amount of time wiggling the main blades into the grips trying to get the spacer, blade and grip holes to line up. Compounded of course by the very, very tight fit these components both have and need. I guess this is also applicable to any other helicopter with tight fitting blades. So in response to this problem I came up with this little improvement to my fitting process that I thought might be worth sharing. I simply bought an M5 bolt from my local hardware that was longer than the full blade grip assembly then cut it down to the width of the blade root and spacers combined. I rounded off and polished the cut end a little to. Now all I do is place this little M5 rod through the blade and spacers to hold them all aligned while I push the blade assembly into the grip. A few wiggles and the pin drops out when aligned. Then follow it up with the proper bolt. Job done in 30 to 40 seconds on average.
As an afterthought you could actually put a very small (1/2 mm deep and wide) channel from the edge of you grip to the hole. If you did this on both internal surfaces of the grip and sized your pin to fit perfectly you could in theory just push the assembly directly to the hole. No wiggling. But, it would have to be pretty close to perfect.