Yes. Try burning those at 12x.
And I would try playing your backups (that skip currently) in your computer to see if they work.
What blank media are you using at the moment? Specify a) brand name b)type (-R, +R, -RW, +RW, RAM, DL, etc.) c)media code, d) capacity/size, e) batch codes/serial codes (often found printed on the inner plastic hub of the blank disc), and f)country (factory information would be great as well, if possible) where the media was made (look on the physical packaging; do not rely on programs to accurately give you this information).
If you don't know how to obtain media codes, you may find the following programs useful:
http://dvd.identifier.cdfreaks.com and
http://www.dvdinfopro.com/
Disc Regions are 1,2,3,4,5,6,7,8
CSS Protected No
Media code/Manufacturer ID RICOHJPN!R0
Media code/Manufacturer ID RICOHJPN!R0
UDF Format Type V1.02
UDF Volume Name RIENNEVAPLUS
UDF Application id ELBY CLONEDVD
UDF Implementation id ELABORATE BYTES
UDF Recording Date/Time (mm/dd/yyyy) 4/13/2007 21:03:07
Format Capacity 3.31GB(3.56GB)
Book Type DVD-ROM
Media Type DVD+R
Manufacturer Rated Speed Unknown
Data area starting sector 30000h
Data area end sector 1A808Fh
Linear Density 0.267um/bit
Track Density 0.74um/track
Number of Layers 1
Complete Media Code
00000000 08 02 00 00 01 0F 02 00 00 03 00 00 00 1D 80 8F ................
00000010 00 00 00 00 00 00 07 52 49 43 4F 48 4A 50 4E 52 .......RICOHJPNR
00000020 30 33 04 38 23 54 37 13 00 44 73 00 84 6D 15 15 03.8#T7..Ds..m..
00000030 0B 0B 08 08 01 19 1B 0C 0C 0C 0D 01 00 00 00 00 ................
On the discs it says...Maxell dvd+r
4.7gb data
16x
120min video