Scotland v Tonga: Bristol prop Kyle Traynor to make unlikely return Having been mentored by Jacobsen at Edinburgh, Traynor paid tribute to the 65-times-capped prop's role in his development. "Chunk [Jacobsen] has been hugely important in my career," he said. He has always helped me and given me loads of advice. He is a great bloke and I have a lot of respect for him. Traynor's drafting into the side means that Scotland will go into their final Test of the year with two props - the other is Newcastle's Euan Murray - who play their domestic rugby in England's second-tier Championship and a hooker, Scott Lawson, from the club - London Irish - that is currently second from bottom of the Aviva Premiership. However, Traynor stressed that he is ready for the challenge of taking on the Tongans. He said: "I have played against some really good tightheads in the Championship. They are physically a lot bigger and more capable at scrum time, although they maybe do not have the all-round game of guys at the higher level. But, from what I've experienced in the set plays so far, it is a very tough league. Traynor was an unused replacement against both New Zealand and South Africa, although he had the grace to acknowledge that the form of Grant, who was behind him in the Edinburgh pecking order at one stage, did not exactly justify a call from the bench. The move from Murrayfield to Pittodrie's narrower pitch suggests that forward supremacy will be even more important than usual, but Scotland defence coach Matt Taylor made it clear that any changes in approach would be dictated by the opposition rather than the venue. "When a pitch is narrower that should help your defence, but the Tongans are renowned for trying to punch through defences," Taylor explained. We have just been concentrating on tackling low and trying to get two men in the tackles. We don't want them to build momentum. Defensive errors were expensive for Scotland against the Springboks as they surrendered field position and points through a stream of penalties. There have been rumours around the camp that the Scots have been struggling to adapt to changes Taylor has made, but the coach suggested that they are becoming more comfortable with his systems with every game. Taylor said: "I think that the guys have improved in every session. Going into this week, I can see improvement in the group and individuals. During the week you have to work hard on individual skills as well as systems and we have definitely made improvements from New Zealand to South Africa and I hope they will be even better this week. You want to limit the number of penalties you give the opposition and we will be doing that this week. The referee is quite hot on penalties around the breakdown, especially by the attacking team so we need to make sure that our ball carries out good and our clear outs are good. Traynor echoed Taylor's remarks, warning that Tonga, who are only two places behind Scotland in the world rankings, should not be taken lightly. "They are a good side," said the prop. They showed in the World Cup, when they beat France, that they are very dangerous. But if we show up in defence and get our attack right we can cause them problems.