He spent most of Reagan's rise and Presidency attacking Ronnie, and has famously made a habit of “endorsing” very Liberal Republicans for the Presidency. He made very clear in the last election that his first choice was Rudy Giuliani (whom he called the most Conservative candidate in the race), and his second choice Mitt Romney.
Will has been very hostile toward any form of cultural/social/moral Conservatism in the GOP. He has more than once tried to lecture Pro-lifers for activism, saying that, essentially, the entire Pro-Life movement should be satisfied with nothing more than a commitment by Republicans to appoint Strict Constructionist judges when they are in power.
He has open contempt for SoCon opposition to the homosexual agenda. He has never hidden that contempt.
Horsefeathers. Will was an early and enthusiastic supporter of Reagan. He came out of National Review which was a major kingmaker in the day which had helped clear the way for Reagan. Will went so far as to help prep Reagan for the Carter debates. He was an unabashed supporter.