how to remove the white splotches on glass?

I'm using 3ds max 2009 and vray. this is my first render which took me about an hour

this is my preview (light cache subdivs 200)

and this is my third. nagka splotches. ang alam ko lang is pag irradiance map minsan lumalabas yung mga splotches kaso di ko po alam alisin. binago ko lang yung light cache subdivs(200-1000) and yung photon emit radius ng vray sun 30, intensity=0.1,size=5

ang ginawa ko na lang e tinapalan ko yung mga white splotches sa paint. (hindi pa kasi sanay mag photoshop) and sobrang tagal irender nung concrete road kaya tinanggal ko yung reflection and displace kaso pumanget. and pano gagawing black ulit yung shadow ng mga trees? naging medyo bluish po e

hindi mo na kailangan ng reflection sa concrete road. palitan mo din ang glass material mo. and if you have time to do all the texturing, save as ka ng panibagong copy, then right click mo tapos click mo yung vray scene converter. para tanggal lahat ng raytrace. good luck.

i think may nagkadikit na face sa window glass yun yung nagcause ng splotch

thanks po ng marami. naalis ko na yung splotches. thanks thanks

paano mo naalis?