today i visited COOL SUN workshop. they checked the ac system and said its fine. Margalla cooling is like this. guy also mentioned that its Denso compressor but not one that margalla came with. additionally, compressor is installed after doing alterations. per them, it wont work if i go with kabli compressor so i should get new sendan one (505 model). Estimate is 13000 including everything. Denso one will cost around 21000.