MarkerManager and Custom MapType in Google Maps

I took two simple examples from Google Maps v.3 Documentation

https://code.google.com/apis/maps/documentation/javascript/examples/maptype-base.html

google-maps-utility-library-v3.googlecode.com/svn/tags/markermanager/1.0/examples/weather_map.html

And I tried to merge it, and its working http://nazin.gexe.pl/maptype-base.html

Where is the p开发者_运维百科roblem then? If you look at tile (4, 2) there should be some weather signs which is ok, but when you scroll map to tile (12, 2), (20, 2), (-4, 2) and so on, same markers appears here. Is there any way to show markers only in "default" tile which is (4, 2) tile?

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Best solution I found so far is to create projection (Euclidean Projection) for CoordMapType and set scaleLat and scaleLng values big enough, so markers will repeat after "long distance".