I have a 2015 John Deere 3039R and the H165 loader.  I noticed the other day when lifting loads of gravel for a project that the loader masts are lifting off the mounting frames on both sides with a full load.  I was able to put the bucket in 20 degree position (attachment procedure) and heard the masts pop back onto the mounting frames and end plates.  I am still seeing a bit of lift on heavy loads that I am not comfortable with.  Seems to be one side more than the other.  Nothing unusual about the weight, lifted this 1 1/4" processed gravel material at this weight many times before.  I have proper ballast and loaded rear tires.  The machine is fairly new to me so I have not taken the FEL on/off before.  Manual only seems to talk about checking torque on the frame and loader bolts.  Is there some adjustment that I should be looking into on this?
	
		
			
		
		
	
				
			 
 
		