[Histonet] curling of kidney sections in water path

[mohamed abd el razik]

dear all, i'm facing an issue that trouble us when we process tissue samples of different organs and cutting them; all organs are ok and spread fine and somoothly on ater path except for kidney sections (looks wrinkled and curled as if the praffin fram around it prevent it from spread!!!). i have tried using alcohol befor path and elevating the water temprature but no change in the sctions happened even after stay in the incubator).... any suggestions please 

thank you for your help
Mohamed 
Cairo University