Support for single-payer, abortion, the Kelo decision and gun control were long-held stances of Trump’s. It doesn’t take an extensive cherry-picking effort to flesh them out.
I cannot vouch for single-payer, abortion, and the kelo decision.
But I have extensively researched the gun control issue, and have written several articles about Trump’s views.
Your assertion on gun control is simply false. Trump in a couple of instances, put forward views that weakly supported a couple of gun control positions, 15 years ago. For example, he said that he supported the “assault weapon” ban that was already law at the time.
Weak support for an existing law.
Since then he revised his position and has strongly supported solid, pro-Second Amendment positions. He has done this more clearly and convincingly than all the other candidates other than, maybe, Ted Cruz.
http://gunwatch.blogspot.com/2015/09/donald-trumps-policy-on-second-amendment.html