I just looked here
at Vanguard, where you can scroll down and see Real Estate percentage from the Vanguard site. Apparently VTSAX has 3.76% in real estate. VFIAX has 2.28%. I just did the math, and it's putting me close to 13% overall in real estate. I can live with that.
I'm still happy keeping 10% in VGSLX. Vanguard has shown my rate of return for the last decade at 11% with everything reinvested. Less than the 19.5% and 13.6% returns on my other largest holdings, more than the 7.7% of Wellesley. My performance page on Vanguard is showing that Wellesley has given twice as much in income returns, to the tune of 20% now of the overall amount I have in there. VGSLX shows income returns right now after that same decade at 10% of the overall amount.
The link makes comparing funds easy. I'm very happy having both in my portfolio.