MA Cross

First of all, I have implemented this EA with someone from this forum, He did a great job, but I'm just curious, with this EA "sometimes" I get late confirmation to buy / sell, "sometimes" it is allright..

The requirement :

- Just simple 2 MA crossing, MA type can be defined : simple, exponential, etc

- period and shift can be defined

- Currently, I'm using this crossing via renko chart [offline] . It works fine, like I said, sometimes it get good signal, sometimes it doesn't

- After MA cross, it wait until the candle is closed [renko candle] ... because if it is not closed, we get a lot of crossing, but a false signal

I attach 3 picture,

1. the outlook of the EA 

2. example of a good cross

3. example of a cross, but taken late

I open to developer, if developer want to modify the previous EA, it is allright, and if wants to make from scratch, vice versa

Thanks