RV016 Gateway to Gateway VPN Internet Traffic

I have a RV016 router in place that has numerous Gateway to Gateway VPNs connected to various sites over Comcast Cable. I would like to funnel all traffic through the RV016, but I am only seeing the tunnel traffic going between each.
I think I saw some posts eluding to the fact that since the RV016 only deals with layer 3 that this is impossible. What if I added a route to each of my workstations that router all 0.0.0.0 traffic through the RV016 router. Would this work even if it's really ugly?
What I am trying to avoid is having an open Internet connection at all of my sites. I would rather be able to control it here at the main office's RV016.
Thanks in advance!

tekliu,
I actually found and tried this solution last night, but below is how my routing table looks on my RV042. When I do a tracert to www.google.com or whatever I can see that the traffic basically hits my router then out through the Comcast modem. If I do anything on the main office subnet 172.16.1.0 then I can see it hit both routers.
Should I maybe reset the router to default and do this from the start? As you can see below all 0.0.0.0 traffic is set to go out through the Comcast gateway 74.94.253.10.
Routing Table Entry List
Destination IP Address
Subnet Mask
Default Gateway
Hop Count
Interface
74.94.253.8
255.255.255.252
40
ixp1
74.94.253.8
255.255.255.252
45
ipsec0
192.168.3.0
255.255.255.0
50
ixp0
192.168.2.0
255.255.255.0
74.94.253.10
10
ipsec0
192.168.2.0
255.255.255.0
50
ixp0
172.16.1.0
255.255.255.0
50
ixp0
default
0.0.0.0
74.94.253.10
40
ixp1
I can send you all of my config data when if you need it.
Thanks!

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