Drew_K wrote:
 On the snap up brackets, where do you put the backer plates?  On top of the tongue?  I'm trying to figure out what section you're saying to reinforce.  The tongue on my TT is rectangular, not a C channel.
I have the 1700 pound Reese and I haven't bolted my snap up brackets to the tongue.  Sounds like I should.
The snap ups and bolting, yes for sure on the heavy TW's.  Which is around 1,000# and above. 
The backer plates, now is the time to do this before the damage comes. There are a few way pending how your frame is made.  If the ends of the tube are open, you  have different options then those with  closed tubes. 
The link to Mrekims post I linked has a few others fixes on it.  OR go the search feature here on RV net and put in snapup, go 1 year or older and read on. 
like this